use reflow to migrate from flow to typescript

scm-ui/ui-components/src/errors.ts

@@ -0,0 +1,86 @@
+type Context = {
+  type: string;
+  id: string;
+}[];
+type Violation = {
+  path: string;
+  message: string;
+};
+
+export type BackendErrorContent = {
+  transactionId: string;
+  errorCode: string;
+  message: string;
+  url?: string;
+  context: Context;
+  violations: Violation[];
+};
+
+export class BackendError extends Error {
+  transactionId: string;
+  errorCode: string;
+  url: string | null | undefined;
+  context: Context = [];
+  statusCode: number;
+  violations: Violation[];
+
+  constructor(content: BackendErrorContent, name: string, statusCode: number) {
+    super(content.message);
+    this.name = name;
+    this.transactionId = content.transactionId;
+    this.errorCode = content.errorCode;
+    this.url = content.url;
+    this.context = content.context;
+    this.statusCode = statusCode;
+    this.violations = content.violations;
+  }
+}
+
+export class UnauthorizedError extends Error {
+  statusCode: number;
+  constructor(message: string, statusCode: number) {
+    super(message);
+    this.statusCode = statusCode;
+  }
+}
+
+export class ForbiddenError extends Error {
+  statusCode: number;
+  constructor(message: string, statusCode: number) {
+    super(message);
+    this.statusCode = statusCode;
+  }
+}
+
+export class NotFoundError extends BackendError {
+  constructor(content: BackendErrorContent, statusCode: number) {
+    super(content, 'NotFoundError', statusCode);
+  }
+}
+
+export class ConflictError extends BackendError {
+  constructor(content: BackendErrorContent, statusCode: number) {
+    super(content, 'ConflictError', statusCode);
+  }
+}
+
+export function createBackendError(
+  content: BackendErrorContent,
+  statusCode: number,
+) {
+  switch (statusCode) {
+    case 404:
+      return new NotFoundError(content, statusCode);
+    case 409:
+      return new ConflictError(content, statusCode);
+    default:
+      return new BackendError(content, 'BackendError', statusCode);
+  }
+}
+
+export function isBackendError(response: Response) {
+  return (
+    response.headers.get('Content-Type') ===
+    'application/vnd.scmm-error+json;v=2'
+  );
+}